Grease-cup.



0. ZERK.

GREASE CUP.

APPLICATION FILED APR. 3, 1M3.

Patented May 4, 1915.

2 /3 i d f I! 6 lLni 20 /0 lfllmlli l 5 a2 3 m4 4 J z Q J- a 4 J0 fih-2.

INVtNTOEL WITNt-SSES BY an 20%;

ATTORNEY- OSCAR ZERK, OF CLEVELAND, OElQ, ASSIGNGR,

OE AUBURN, NEW YORK.

W. BOWEN,

BY MESNE ASSIGNMETJTS, TO GEORGE GREASE-CUP.

Application filed April3,1913.

;/ n all t 10m. it may (JOIMTT/c Be it known that I, OSCAR ZERK. asubject of the lhnperor of Austria-llungary, residing at Cleveland, inthe county of (ayahoga and State of Ohio. have invented a certain newand useful Improvement in Grease-Cups, of which the following /is afull, clear, and exact description, reference being had to theaccompanying drawn ry.

This invention relates to grease cups of the type wherein there is a.cap number. a cap member screw threadei'l thereto o sta tionarytherewith in service, and a lli TJ'fi'tlDlH plunger within the capmember.

The object is to provide a simple and eilicient spring means for lockingthe cap to the cup, prevent displacement. of the cap but allowing thecap to be screwed into place or removed from the cup whenever desired.The spring detcnt is contained within the cup and is thus entirelyhidden from view.

The invention is hereinafter more fully explained and its essentialcharacteristics are summarized in the claims.

In the drawings, Figure l. is a. side elevation of my grease cup; Fig. 2is a vertical central section thereof on an enlarged scale, showing thecap before it is turned home;

Fig. 3 is a plan of the cup with the detent spring therein; Fig. 4; is aperspective view of the detent spring removed; Fig. 5 is a. perspect eview of a modified form of detcnt sprii'lg'.

Referring by numerals to the parts shown in the drawings, 1 representsthe cup, which has an interior chamber 2 and an exit open;

ing 3 leading from the upper face of the base of the cup and forming thebore of a projecting his) le tidying an external thread 4. The exteriorofi the cup is formed angularly near the base, as shown at 5, and abovethis is preferably a cylindrical portion 6. The inner wall of the cup isprovided with threads 7.

The cap is designated 10. It has a suita le top, which may be ofdome-shape, as

-- Shown at 11, and has a cylindrical wall provided with externalthreads 12 adapted to screw into the threads 7. Above these threads iswhich may be in the form of up and down grooves and projections, asshown.

J ournaled 1n the top of the cap is, a screw 20, Which has a handle orthumb piece 21 above the cap, by which it may be turned,

Specification of Letters Patent.

provided suitable knurling 13,

Patented May 4, 1915. Serial No. 758,552.

and, threaded on this screw within the cap is a suitable plunger. Thisplunger is shown as comprising a metal member, 31, a leather or flexiblewasher 32 associated therewith, and a metal washer 33 holding theleather washer in place. The metal member 'cll'is preherably flanged tohold the leather washer and the washer 33 in place. The interior of thecup is provided with one or more'lo'ngh 5.5 i'udinal grooves 15, intowhich extend one or more projections of the plunger, so that. thisplung'ex, may slide but can not rotate. Accordingly, when the wing 21 isturned in the proper caused to move downwardly and force the greaseinthe cup through the bore 3. v

To eli'ectiuely lock the cap to the cup without in any way interferingwith the appearance of the device, I provide an annu-f y lar spring l0,shown in perspective in Figs. l and This spring is riveted, or otherwisev secured, to the upper face ofthe base. of the cup a the side of thebore 3 and extends" around the prolongation of that bore, and has a.projection adapted to engage notches in the lower edge of the cap. l

The spring shown in Figs. 2 until is held, by a rivet 50, anddiametrically opposite the: F rivet is the upward projection 41, formedbyj bending the material of the spring. This projection coacts with anyof a number of notches 25 in the lower edge of the cap wall; As the capis being screwed into place, these 7 notches engage the projection and.bend the spring downwardly so that, when the cap' comes into the finalposition shown in Fig. 1, it is effectively detained by the spring. Thisdetaining is suliicient so that a slight force applied to the cap willnot displace it, .95 while, to remove it, it is only necessary to gripthe cap firmly rection to screw it out of the cup. This form of springis well adapted for small grease f cups, for even with small sizes thereis '21100 considerable effective length of spring between the pointengaging the cap and the direction, the plunger may be 70 and rotate itin the dii V 41 to allow the necessary action of the With either formof-spring, the opening 42 in the spring allows easy access to the bore'3, so that the spring does not interfere I claimis:

1. a grease cup, the combination of a cup portion having an internallythreaded Wall and having a nipple projecting from its base with aninternal bore, an annular spring secured to said base within the wall onone side of the opening of the spring, the opening of the spring beingopposite the entrance to said, bore, said spring having a projection,anda cap havi an external thread 5 and screwing into the internallythreaded wall of the cup and notched to coact with said rejection.

2. i a grease cup, the combination of a cup, a cap screw threadedthereto, and an annular 5 ring having an opening for the passage ogrease and secured to the cup at the side of such opening, and having anenement with the lower f the cap.

I 3. In a grease cup, the combination of a cup, a cap screw threadedthereto and havmg a notch at. its lower edge, and a spring washer havingan opening for the passage of and secured at the side of such openmg tothe cup, said washer having a projec- 40 tionadapted to engage saidnotch.

f;- 4.' In a grease cup, the combination of a su havin an internallythreaded wall ris- 'ing from t 0 upper face of its base, the cup havingan exit opening leading from said upper face, a cap screwing into saidwall an having a notch at its lower edge, and a springinember secured tothe upper face of the base of the cup at the side of the opeir theopening a projection adapted to engage said notch.

5. In a grease cup, the combination of a cup, a cap screw threadedthereto, and a spring washer within the cup having an opening forthepassage of grease and secured at one side of such opening to the cup,and at the other side having a spring engagement with the lower edge ofthe cap.

6. In a grease cup, the combination of a cup portion having aninternally threaded wall and having an externally threaded nippleprojecting from its base with an internal bore, a spring washer securedto said base within the wall on one side of the opening of the washer,said'washer having an upwardly extending projection on the opposite sideof its opening, a cap having an external thread and screwing into theinternally threaded wall of the cup, said cap being notched at itsbottom edge to engage said projection, a plunger within the cap, and ascrew for operating said plunger having a turning means above the cap.

7. In a grease cup, the combination of a cup having an internallythreaded wall rising from the upper face of its base, the cup having anexternally threaded projecting nipple, said cup having a bore leadingfrom said upper face through the nipple, a cap having an externallythreaded wall screwing into the internally threaded wall of the cup, aplunger within the cap, means for moving the plunger up and down in thecap, said cap havin its lower edge notched, and a spring within the cupsecured to said upper face of the base of the cup on one side of thebore and engaging the cap on the opposite side thereof.

In testimony whereof, I hereunto afiix my signature in the presence oftwo Witnesses.

OSCAR ZERK.

Witnesses:

ALBERT H. BATES, BRENNAN B. WEST.

ing, said member also, having at the side of

